Caxias do Sul
Rio Grande do Sul, Brazil
- PM2.5
- 14.5 ug/m3
- PM10
- 15.5 ug/m3
- Worst month
- September
- Trend
- n/a
EPA category: Moderate
Caxias do Sul vs Rio de Janeiro AQI Comparison
Side-by-side OpenAQ-derived air quality comparison for Caxias do Sul and Rio de Janeiro. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.
Lower average AQI: Rio de Janeiro (2-pt gap)PM2.5: Caxias do Sul 14.5 ug/m3 · Rio de Janeiro 13.5 ug/m3
Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-09-04–2024-12-31 and 2024-01-01–2024-12-31.
Compare two cities
vs
Caxias do Sul vs Rio de Janeiro
54
Rio de Janeiro
Rio de Janeiro, Brazil
- PM2.5
- 13.5 ug/m3
- PM10
- 36.0 ug/m3
- Worst month
- September
- Trend
- n/a
EPA category: Moderate
Lower average AQI in this selected period: Rio de Janeiro. Values are historical OpenAQ-derived city summaries, not live readings.
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Caxias do Sul
-
-
-
-
-
-
-
-
98
51
37
33
Rio de Janeiro
40
39
36
54
61
75
66
65
76
41
34
37
What this comparison measures
- Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
- PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
- Seasonality — worst and cleanest months from the monthly city rollups.
- Trend — difference between the earliest and latest yearly AQI average in this build.